diff --git a/package/rng-tools/Config.in b/package/rng-tools/Config.in
index bbcf4db843..b5cce7e39d 100644
--- a/package/rng-tools/Config.in
+++ b/package/rng-tools/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_RNG_TOOLS
 	bool "rng-tools"
 	depends on BR2_PACKAGE_LIBGPG_ERROR_ARCH_SUPPORTS || !(BR2_i386 || BR2_x86_64) # libgcrypt
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_ARGP_STANDALONE if BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_MUSL
 	select BR2_PACKAGE_JITTERENTROPY_LIBRARY
 	# For rdrand ligcrypt is required and it's not obvious to users
@@ -10,3 +11,6 @@ config BR2_PACKAGE_RNG_TOOLS
 	  Daemon to use hardware random number generators.
 
 	  http://sourceforge.net/projects/gkernel/
+
+comment "rng-tools needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS